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Changes in Goodwill (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Nov. 01, 2009
Jan. 29, 2012
Jan. 30, 2011
Jan. 31, 2010
Jul. 29, 2012
Goodwill [Line Items]          
Beginning Balance   $ 3,150 $ 3,149 [1] $ 3,368 $ 3,279
Acquisition   12      
Realization of tax deductible goodwill from a prior acquisition   (11)      
Impairment (224)     (224) [1]  
Translation adjustment     1 5  
Ending Balance   $ 3,151 $ 3,150 $ 3,149 [1] $ 3,279
[1] Does not sum due to rounding